Tranny / tcase problem

[1972RedNeck]

What year vehicle should I look for in the junk yard? I'll get the brace rod just to be safe.

[DirtyLarry]

Originally Posted by 1972RedNeck

What year vehicle should I look for in the junk yard? I'll get the brace rod just to be safe.

What tcase do you have behind the 700R4? 205’s didn’t come behind 700R4’s so you have to modify one to fit. Some 70’s and 80’s trucks had them. Just walk the junk yard until you find one. You’re probably going to need to modify whatever you find anyway. You really don’t need the rod unless it makes you feel better to have one anyway. I never ran a support rod or tcase side bracket on any of my old 4x4’s and never had an issue without them.

[1972RedNeck]

Originally Posted by DirtyLarry

What tcase do you have behind the 700R4? 205’s didn’t come behind 700R4’s so you have to modify one to fit. Some 70’s and 80’s trucks had them. Just walk the junk yard until you find one. You’re probably going to need to modify whatever you find anyway. You really don’t need the rod unless it makes you feel better to have one anyway. I never ran a support rod or tcase side bracket on any of my old 4x4’s and never had an issue without them.

I have a 205. I am fine with having to modify something.

Originally Posted by Chevy1TonFun

DirtyLarry you can call BS, but this is the voice of experience. I shatter my trans casing and that was with the frame attachment. I was just giving my two cents.

So should I leave the side bracket on or take it off? I am confused.

[Chevy1TonFun]

DirtyLarry you can call BS, but this is the voice of experience. I shatter my trans casing and that was with the frame attachment. I was just giving my two cents.

[DirtyLarry]

Originally Posted by Chevy1TonFun

DirtyLarry you can call BS, but this is the voice of experience. I shatter my trans casing and that was with the frame attachment. I was just giving my two cents.

I still call BS. Voice of a lifetime of experience of 20ish year old guy on 1 single truck? I am sure that your 18” of lift, 40” tires, 468 BB and questionable engine and driveline angles as well driving habits through mud races may not have had anything to do with the transmission case breaking, right?

Sorry but I still harbor suspicion with you from THIS Pirate deal from a few years ago. Post #70 at Pirate. Once you play forum games like that it is hard to recoup yourself with guys older than you that still have good memories.

[vectorit]

Interesting.

[Redcap]

Originally Posted by Chevy1TonFun

DirtyLarry you can call BS, but this is the voice of experience. I shatter my trans casing and that was with the frame attachment. I was just giving my two cents.

You are mistaken.

[Zoomad75]

Originally Posted by Chevy1TonFun

DirtyLarry you can call BS, but this is the voice of experience. I shatter my trans casing and that was with the frame attachment. I was just giving my two cents.

I might be reading this the wrong way, but doesn't that statement just prove what Larry's been saying all along? He shattered his trans case and that was with the frame attachment.

Maybe I haven't had enough beer yet.

[csb#356]

Originally Posted by Zoomad75

I might be reading this the wrong way, but doesn't that statement just prove what Larry's been saying all along? He shattered his trans case and that was with the frame attachment.

Maybe I haven't had enough beer yet.

I've had plenty of beer but still confused by this

[yousesteers]

The frame bracket does not allow the transfer case to flex and thus either breaking the case or the adapter most usually if it were mine i would get rid of it

[mud.man.rj]

My sm465 in my 71 doesn't have one, glad now, noticed it was missing but my engine is chained to the frame (with 3/4" slack) to help. Got to control the HP.

[mattfrediani]

So I have a TH350 with the 205 case and the side bracket is there and rubber is worn out on side mount. I replaced the transmission with a new TH350, installed new energy suspension mounts to the crossmember and put the side bracket back. should I remove the side bracket? can the adapter plate hold the transfer case? Really? remove the side bracket or get new rubber for it? my 4x4 is mainly a street wheeler and never got off road

thanks guys

Matt

[1968vetL-71]

I think this thread already answers your question. Ditch it! The transfer case will be just fine by the adapter itself. I always removed the side brackets when present. Cracked a few adapters in my time, I was hard on them tho. There will always be the argument of "yay or nay", just like Ford vs Chevy.... Well not on this site its NOT!!!

[87Skier]

Just thought I would add this in here... my brother has a 79 bronco with a 205. It's driver side drop. It has a side mount. Not too much different than the ones we have on our trucks.

[Redcap]

Originally Posted by 87Skier

Just thought I would add this in here... my brother has a 79 bronco with a 205. It's driver side drop. It has a side mount. Not too much different than the ones we have on our trucks.

Fords bust transfer case adapters too.

[El Dorado Jim]

Originally Posted by 87Skier

Just thought I would add this in here... my brother has a 79 bronco with a 205. It's driver side drop. It has a side mount. Not too much different than the ones we have on our trucks.

get rid of the side mount....

[powerdriver 1958]

Looks like we have a difference of opinion ,So lets hold the outside this forum battle down....

However My opinion mirrors Larry's . I run an 84 3/4 mudder 3 years racing in a bunch of pits around Kansas City . 350 turbo and a 205 transfer . No transfer brackets no rods from the mounts.

I beat on that thing hard , from the time the green flag dropped till i run out or the red flag was thrown I never lifted . No problems with adapters , No problem with transmission housings .

1 year and a 1/2 I run it as a long bed , Then as a short bed .

[1972RedNeck]

I will never ever use my truck that hard (I have others for that). I will still get a brace rod. I don't know why.

[Redcap]

Originally Posted by 1972RedNeck

I will never ever use my truck that hard (I have others for that). I will still get a brace rod. I don't know why.

It is always a good idea to know why you are doing something.

[powerdriver 1958]

...

Union Star mud run - YouTube

[lowrollin70gmc]

I'm dragging this back up for another question on NP205 support. Looking for Larry's advice on the matter, knowing his level of experience.

I clocked the 205 behind my Cummins/NV5600 flat with a Trail Tech Fab adapter. At the same time I ordered their NP205 support kit. It attaches to the rear of the case, opposite the front driveline and features a poly bushing. Any opinions on this means of support? It is closer to the center than a stock frame mount and does have a bushing.

Adapter (stock photo, mine is welded up and installed so no good pictures)



Support kit


I haven't welded up the support kit, so opinions are welcome.

[DirtyLarry]

Originally Posted by lowrollin70gmc

I'm dragging this back up for another question on NP205 support. Looking for Larry's advice on the matter, knowing his level of experience.

I clocked the 205 behind my Cummins/NV5600 flat with a Trail Tech Fab adapter. At the same time I ordered their NP205 support kit. It attaches to the rear of the case, opposite the front driveline and features a poly bushing. Any opinions on this means of support? It is closer to the center than a stock frame mount and does have a bushing.

I haven't welded up the support kit, so opinions are welcome.

Somehow I missed this one back in September. That looks like a nice set up there for hardcore use! As long as the tcase is allowed to rotate with the transmission/engine assembly instead of being tied to the frame, that would work great. Nothing wrong with added beef to connect the tcase to the transmission.

[lowrollin70gmc]

I'll be about 350 hp / 800 lb-ft once I finish turning up the Cummins. I've held back on playing with the pump until everything else is beefed up and this is one of the last things to do.

[b454rat]

The last truck I built was a 454 4-speed with a later 205. Had 35" tires on it. I didn't beat the crap out of it, but gotta have some fun with a big block stick truck. That didn't have a brace on it. All the trucks I've owned, worked on, stripped parts off of in a junkyard, DIDN'T have that brace. Even with a small block, when you jump on it you can feel the drivetrain twist, shifter can move 3-4" maybe more. If you have that brace on there, the one piece is trying to hold the entire drivetrain from twisting. The t-case itself isn't gonna break, the wee little adapter is gonna take the force of it. I've had some 80s trucks with the 208 that had braces to went to the bell housing, but took them off and still didn't have a problem.

If you want to brace or add some support, that brace shown above would OK. Or some other type, but it needs bushings so it can flex with the rest of the drivetrain.

[argonaut]

This thread is an interesting read. It is true that the T/C torque mount would be the cause of adapter and bellhousing failures.

I do see that some on here have said they weren't used on 73 and up trucks. I'm wondering about the validity of that statement only because my 73 K20 had the mount. Not to say that someone didn't add it on later, thinking it was necessary. I'm wondering when GM truly did stop using them.

Also, does anyone have a picture of what the alternative torque rod looks like? I've never seen this before.